C059EBrake Pressure Sensor E Missing Calibration
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- C059E reports that sensor E, one more pressure sensor in a multi-sensor brake unit, has never been calibrated successfully or that its record is lost. No maker documents C059E publicly; for sensor E only the circuit codes C059F–C05A2 exist. GM's published logic for related sensors shows what can go wrong: for its pedal travel sensor (C05D4) the stored status reports a failed zeroing if the sensor had an electrical fault, the car moved or the brake was applied during calibration, or the offset was too big, too small or unsteady. For pressure sensor A GM's 2025 tables check only the status flag, 500 ms after wake-up, Type A. Saab lists module or modulator replacement as reasons to recalibrate. Rerun the calibration with the car stationary and the pedal untouched.
- What you may notice
- ABS/ESC or brake system warning lamp on
- Brake assist or stability functions disabled
- Likely causes
- LikelyCalibration run while the vehicle moved or the brake pedal was pressed
- LikelyCalibration skipped after replacing the brake module or hydraulic unit
- PossibleSensor offset too large or unstable so the calibration is rejected
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €60 – €300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.